54621516497772 has 192 divisors, whose sum is σ = 147436692480000. Its totient is φ = 15416401555968.

The previous prime is 54621516497719. The next prime is 54621516497813. The reversal of 54621516497772 is 27779461512645.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4791775729 + ... + 4791787127.

It is an arithmetic number, because the mean of its divisors is an integer number (767899440000).

Almost surely, 2^{54621516497772} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54621516497772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73718346240000).

54621516497772 is an abundant number, since it is smaller than the sum of its proper divisors (92815175982228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54621516497772 is a wasteful number, since it uses less digits than its factorization.

54621516497772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12988 (or 12986 counting only the distinct ones).

The product of its digits is 177811200, while the sum is 66.

The spelling of 54621516497772 in words is "fifty-four trillion, six hundred twenty-one billion, five hundred sixteen million, four hundred ninety-seven thousand, seven hundred seventy-two".